Ideal-Air Pro Series Ultra Sonic Humidifier 300 Pint

Commercial Grade Humidity Control — 300 Pints of Ultrasonic Output from Ideal-Air's Pro Series

The Ideal-Air Pro Series 300 Pint Ultra Sonic Humidifier uses ultrasonic transducer technology to generate ultra-fine water particles that distribute evenly across the plant canopy for a balanced, consistent humidity field. Built with cold-rolled steel plates in a stainless steel housing, it's engineered for demanding grow room environments where reliable, high-output humidity control is critical to crop performance.

Because ultrasonic mist is far finer than evaporative humidification, the unit requires ducting — 4-inch PVC or 4-inch DWV plastic pipe — to distribute output properly; running it without ducting risks moisture accumulating on top of the unit and triggering a safety shutdown.

Key Features & Benefits

• 300 Pint Daily Output: High-capacity moisture production for large grow spaces where hitting target VPD needs significant humidity input.
• Ultrasonic Transducer Technology: Generates ultra-fine water particles that stay suspended longer and distribute more evenly than traditional evaporative humidifiers.
• Cold-Rolled Steel and Stainless Steel Construction: Commercial-grade materials resist corrosion and wear in the high-humidity environment the unit creates.
• LED Display with 30-90% Humidity Control: Onboard humidity controller with clear LED readout for precise target settings without external controllers in most applications.
• Overflow Safety Switch: Automatic overflow protection prevents water damage from tank overfill during continuous operation.

Who Should Use This

Designed for commercial cultivators, large-tent operators, and serious hobbyists who need reliable, high-output humidity control where smaller consumer humidifiers fall short of maintaining target VPD ranges.

Compatibility

Requires ducting using 4-inch PVC or 4-inch DWV plastic pipe — do not run without ducting. Fill only through the provided hose and float valve. 115V/60Hz, 7.8A. Compatible with the Ideal-Air Pro Series Float Valve (sold separately).

About Ideal-Air

The 300 pint model is the smaller of two Pro Series ultrasonic humidifiers Ideal-Air builds for commercial-scale fogging, sharing the same transducer platform and stainless steel construction as its 600 pint sibling at a lower output and amperage draw.

Frequently Asked Questions

Why does this humidifier require ducting?

Ultrasonic humidifiers produce extremely fine mist that, without ducting, can condense on the unit's surface and trigger the safety shutoff. Ducting with 4in PVC or DWV pipe distributes the mist into the grow space properly and prevents moisture buildup on the unit.

Can I fill the reservoir directly through the discharge piping?

No — filling through the discharge outlets will overfill the tank and prevent the unit from creating humidity. Always fill through the provided hose and float valve to maintain the correct water level.

What water quality is recommended for an ultrasonic humidifier?

Ultrasonic humidifiers atomize whatever minerals are in your water along with the mist. Using RO or low-EC water significantly reduces mineral dust deposition on plants and equipment and extends transducer life.

When should I choose the 600 pint unit over the 300 pint unit?

Choose the 600 pint model when your grow space's daily moisture demand exceeds what the 300 pint unit can sustain, since both units share the same ultrasonic mechanism and just scale output and amperage draw. Undersizing a humidifier for your square footage means it runs continuously without ever reaching target RH.